Wax soo saarka ugu weyn ee ф 48-3620mm dhumucdiisuna waxay tahay 6mm-40mm fasalka 3PE xoojiyeen tuubada birta birta, saliidda iyo dhuumaha gaaska, mashruuca gudbinta saliidda iyo gaaska dahaarka leh tuubo caag ah, tuubada badbaadada dabka caag ah oo dahaarka ah, ilaalinta dabka gudaha iyo dibadda ee tuubooyinka birta caag ah, Qulqulka kulul ee awoodda caaga ah dunta birta, tuubada ilaalinta fiilada.